1801901 Asbestos Mold Survey - Jefferson Building 2 (final).pdf

Guidon Design, Inc.

Indianapolis, Indiana

NESHAP Asbestos Survey and Fungal Investigation

Project 657-19-127JB Renovate Spaces for Domicilary Providers

- Building 2 St. Louis Veteran Affairs

Medical Center - Jefferson Barracks St. Louis, Missouri

September 2019

1915 North 12th Street Toledo, OH 43604-5305

T 419-324-2222 F 419-241-1808 www.ttlassoc.com

September 25, 2019 TTL Project No. 1801901

Mr. Joel Farmer Guidon Design 122 North Pennsylvania Street, Suite 200 Indianapolis, Indiana 46202

NESHAP Asbestos Survey and Fungal Investigation Project 657-19-127JB – Domiciliary Providers

Building 2 St. Louis Veterans Affairs Medical Center – Jefferson Barracks Division

St. Louis, Missouri

Dear Mr. Farmer:

The report for the National Emissions Standard for Hazardous Air Pollutants (NESHAP) Asbestos Survey and Fungal Investigation conducted for Guidon Design, Inc. (Guidon) for the above-referenced site is enclosed.

TTL appreciates the opportunity to provide Guidon with our consulting and testing services.

Should you have any questions or require additional information, please contact Mr. Harry Singh at (419) 214-5058.

Sincerely, TTL Associates, Inc.

Harjot Singh Veronica Winkeljohn, P.E., PMP Project Manager Federal Services Director

R:\SUB\Guidon Design\VA - St. Louis - Jefferson Barracks - Building 2 - 1801901\Report\1801901 Asbestos Mold Survey - Jefferson Building 2.docx

NESHAP ASBESTOS AND FUNGAL SURVEY

PROJECT 657-19-127JB

RENOVATE SPACES FOR DOMICILLIARY PROVIDERS

BUILDING 2

ST. LOUIS VETERAN AFFAIRS MEDICAL CENTER – JEFFERSON BARRACKS

St. LOUIS, MISSOURI

FOR

GUIDON DESIGN, INC.

905 NORTH CAPITOL AVENUE, SUITE 100

INDIANAPOLIS, INDIANA 46204

SUBMITTED

SEPTEMBER 25, 2019

TTL PROJECT NO. 1801901

TTL ASSOCIATES, INC.

1915 NORTH 12TH STREET

TOLEDO, OHIO 43604

(419) 324-2222

Jefferson Barracks - VA Medical Center September 2019 TTL Project No. 1801901 Page i

TABLE OF CONTENTS

Section No. Page No.

EXECUTIVE SUMMARY ....................................................................................................... E-1

1.0 INTRODUCTION

1.1 Project Purpose and Objectives

1.2 Personnel

2.0 ASBESTOS SURVEY

2.1 Homogenous Areas

2.2 Sampling and Analysis Methods

2.3 Asbestos Analytical Results

3.0 LIMITED FUNGAL INVESTIGATION

3.1 Project Objective

3.2 Fungal Spore Trap Air Sampling Procedures

3.3 Fungal Investigation Report

4.0 CONCLUSIONS/RECOMMENDATIONS

4.1 Asbestos Survey

4.2 Limited Fungal Investigation

4.3 Limitations

APPENDICES

Appendix A: TTL Certifications Appendix B: TTL HSA Table Appendix C: TTL Asbestos Analytical Report Appendix D: Air -O-Cell Sampling Cassette Manufacturer Specifications Appendix E: Fungal Investigation Analytical Report Appendix F: Fungal Sample Map

Appendix G: Industry Standard of Care Reference Documents

TTL Project No. 1801901 Page E-1

EXECUTIVE SUMMARY

TTL Associates, Inc. (TTL) conducted a Limited Asbestos Survey and Fungal Investigation at first and second floor North in Domiciliary Providers Building 2 in Veteran Affairs Saint Louis Health Care System (VASTLHCS) – Jefferson Barracks hospital located in St. Louis, Missouri.

The purpose of the survey was to identify asbestos-containing materials (ACM) and perform fungal investigation and fungal air sampling in areas of Building 2 that were planned to be renovated.

The survey was conducted from July 30 through August 2, by Mr. Robert Serlin of TTL.

TTL’s scope of work included the following:

• Survey of first and second floor North in Domiciliary Providers Building 2 for suspect ACM.

• Collection of suspect ACM bulk samples for analysis by Polarized Light Microscopy (PLM) to determine asbestos content.

• Fungal inspection of building 2 by visual inspection and air sampling.

Asbestos Survey

TTL identified twenty-nine suspect materials in Building 2 during the survey. Two materials (HSA 06 and 24) were assumed to be asbestos-containing as sampling these materials would be destructive. A total of 70 samples were collected and 147 layers were analyzed. The laboratory analysis of the samples was conducted by TTL’s laboratory using polarized light microscopy (PLM) method. Six materials (HSA 07, 11, 13, 16, 18 and 23) were identified to be asbestos containing through laboratory analysis.

Fungal Survey

TTL conducted visual inspection and fungal spore trap air sampling to screen for the presence of, and to identify, fungi at Building 2. The samples were transported to EMLab P&K Laboratories, Inc. (AIHA EMLAP #102297) for analysis by plane light microscopy. The results were reported in fungal spores/structures per cubic meter of air (spores/m3). Upon receipt of the laboratory results, TTL incorporated the data into the conclusions and recommendations as presented in this report. The total fungal concentration in the indoor air samples was above the fungal concentration found in the outdoor comparison air sample indicating presence of fungi in the building.

TTL Project No. 1801901 Page 1

1.0 INTRODUCTION

TTL Associates, Inc. (TTL) conducted a Limited Asbestos Survey and Fungal Investigation from July 30 through August 2 in first and second floor North in Domiciliary Providers Building 2 in Veteran Affairs Saint Louis Health Care System (VASTLHCS) – Jefferson Barracks hospital located in St. Louis, Missouri.

1.1 Project Purpose and Objectives

TTL conducted the survey in the first and second floor North areas of Building 2 that were scheduled for renovation to determine the presence of asbestos-containing materials (ACM) and fungi which may require removal prior to renovation activities.

1.2 Personnel

The non-destructive survey was conducted by Mr. Robert Serlin. Mr. Serlin is Missouri Department of Natural Resources (MDNR) certified Asbestos Inspector. Copies of his certification are included in Appendix A.

TTL Project No. 1801901 Page 2

2.0 ASBESTOS SURVEY

This section documents the methodology and results of the asbestos survey.

2.1 Homogenous Areas

Each accessible area within the renovation areas of first and second floor North in Domiciliary Providers Building 2 was surveyed which included the identification of suspect materials and the definition of homogeneous sampling areas (HSA), assessment of the condition of each material, estimation of the approximate quantity of the suspect ACM, and collection and analysis of representative bulk samples from each identified HSA. An HSA is defined as a material that exhibits similar physical characteristics (e.g., texture, surface color, and appearance) and was applied or installed during the same construction period (if known) as determined by TTL’s inspector utilizing professional judgment, experience, and historical building information.

2.2 Sampling and Analysis Methods

TTL provided a MDNR certified asbestos inspector to conduct the non-destructive survey of the renovation areas in first and second floor North in Domiciliary Providers Building 2.

Suspect ACM samples were collected using a coring device or other means, as appropriate, to collect a cross section of the suspect material. The samples were placed into clean, unused sealable bags and marked with a unique sample identification number. The samples of suspect ACM were transported to TTL and analyzed by Polarized Light Microscopy (PLM) using U.S.

EPA Method 600/R-93/116. The EPA/600/R-93/116 “Method for the Determination of Asbestos in Bulk Building Materials” requires that all multiple, distinct layers must be analyzed individually. Sample analysis results are provided for each distinct layer of each sample submitted to the laboratory.

TTL’s laboratory is accredited by the National Voluntary Laboratory Accreditation Program (NVLAP), No. 101594-0, which is administered by the National Institute of Standards and Technology (NIST). The laboratory accreditation number is included in the analytical report.

2.3 Survey Analytical Results

TTL identified twenty-nine suspect materials in Building 2 during the survey. Two materials (HSA 06 and 24) were assumed to be asbestos-containing as sampling these materials would be destructive. A total of 70 samples were collected and 147 layers were analyzed. The laboratory analysis of the samples was conducted by TTL’s laboratory using polarized light microscopy (PLM) method. Six materials (HSA 07, 11, 13, 16, 18 and 23) were identified to be asbestos containing through laboratory analysis. The following materials were identified or assumed to be ACM as defined by the U.S. EPA based upon the survey conducted by TTL and the previous survey data provided.

• 11 each of fire door and frame (HSA 06), Assumed ACM

TTL Project No. 1801901 Page 3

• Approximately 1,515 square feet (s.f.) of floor tile under carpet (HSA 07)

• Approximately 1,065 s.f. of 12" x 12" blue marble pattern floor tile (3 Layers) (HSA 11)

• 1 grey sink undercoat (HSA 13)

• Approximately 10 linear feet (l.f.) of aircell pipe insulation (HSA 16)

• Approximately 1,445 s.f. of floor tile under carper (HSA 18)

• Approximately 28 l.f. of 0-6” mag pipe insulation (HSA 23)

• Approximately 20 s.f. of duct vibration dampener (HSA 24), Assumed ACM

Refer to Appendix B for TTL’s HSA Table. Refer to Appendix C for a copy of the asbestos laboratory analytical report.

TTL Project No. 1801901 Page 4

3.0 LIMITED FUNGAL INVESTIGATON

This section documents the Fungal investigation results.

3.1 Project Objective

The objective of the project was to conduct a limited (non-destructive) visual inspection of the renovation areas in first and second floor North in Domiciliary Providers Building 2 to identify potential biological sources or indications of water damage that could support fungal growth.

Fungal spore trap air sampling was conducted to document general fungal spore levels in the selected Site rooms and determine if indoor trends exist, impacting general indoor air quality (IAQ) as it relates to bio-aerosols. The information obtained from this limited investigation was to be used to support recommendations for proper remediation and cleaning as deemed necessary.

Sampling was conducted in accordance with manufacturer specifications and recommended industrial hygiene practices.

The limited visual inspection included the interior of first and second floor North in Domiciliary Providers Building 2 and did not incorporate destructive sampling techniques. The areas of concern were located during the investigation. At the time of the visual inspection, TTL observed the following:

• High humidity levels and warmth in the stairwells on the first floor

• Broken water pipe in Room 120 and water damage on the carpet

• Visible mold in Room 112 on pipe

• Visible mold above ceiling in Corridor H202

3.2 Fungal Spore Trap Air Sampling Procedures

Fungal spore trap air sampling provides an indication of the total spore density within a given air space at the time of sampling. Fungal spore trap air sampling was conducted by utilizing Air-O- Cell® cassettes according to the manufacturer’s specifications. In each case, the cassette was attached to a high volume air collection device that was calibrated to 15 liters per minute (L/min) utilizing a calibrated rotameter. The samples were collected for ten minutes yielding a total volume of 150 liters for each sample. Nine samples were collected inside the Site building and one sample was collected outdoors for comparison purposes. A total of 10 Air-O-Cell® samples were collected in the following locations:

• Sample 01: Outside

• Sample 02: Basement – Near Center

• Sample 03: First floor – Room 112

• Sample 04: First floor – Southeast Stairwell

• Sample 05: First floor – Northeast Stairwell

• Sample 06: First floor – Room 120

TTL Project No. 1801901 Page 5

• Sample 07: Second floor – Corridor H202

• Sample 08: Second floor – Corridor Outside Room 212D

• Sample 09: Second floor – Corridor H201

• Sample 10: Third floor – Outside Room 309

Refer to Appendix D for Air-O-Cell® sampling cassette manufacturer specifications.

3.3 Fungal Investigation Report

TTL collected nine indoor fungal spore trap air samples at locations described in Section 3.2 and one outdoor comparison sample. The analytical results indicate the following:

• Total fungal concentrations identified in the indoor air samples ranged from 80 to 43,000 spores/m3. A total fungal spore concentration of 5,600 spores/m3 was identified in the outdoor comparison sample.

• Alternaria concentrations ranging from 7 to 13 spores/m3 identified in two indoor samples was equal to, or less than, the concentration of 13 spores/m3 identified in the outdoor comparison sample. Alternaria is commonly found indoors growing on a variety of substrates, including wallboard and painted walls.

• Ascospores concentrations ranging from 27 to 130 spores/m3 identified in six indoor samples were lower than the concentration of 800 spores/m3 identified in the outdoor comparison sample. Ascospores are commonly found in outdoor environments growing on damp substrates.

• Basidiospores concentrations ranging from 27 to 190 spores/m3 identified in seven indoor samples were lower than the concentration of 2,900 spores/m3 identified in the outdoor comparison sample. Basidiospores are saprophytes and are frequently associated with dry rot.

• Bipolaris/Drechslera group concentrations of 7 spores/m3 were identified in the outdoor comparison sample and were not identified in the indoor samples. Bipolaris/Drechslera group are saprophytes found in plant debris and soil, may grow indoors on several substrate types if moisture is present.

• Cercospora concentrations of 7 spores/m3 were identified in the outdoor comparison sample and were not identified in the indoor samples. Cercospora is a saprophyte that causes leaf spots on plants.

• Cladosporium concentrations ranging from 27 to 290 spores/m3 identified in six indoor samples were lower than the concentration of 850 spores/m3 identified in the outdoor comparison sample. Cladosporium is commonly found outdoors growing on a variety of substrates, dead plants and textiles.

• Curvularia concentrations of 7 spores/m3 identified in two of the indoor samples were

TTL Project No. 1801901 Page 6 lower than the concentration of 13 spores/m3 identified in the outdoor comparison sample. Curvularia can grow on a variety of damp substrates but are commonly found growing outdoors on dead and decaying plant materials.

• Penicillium/Aspergillus concentrations ranging from 53 to 43,000 spores/m3 were identified in seven indoor samples. Three sample concentrations were greater than the concentration of 850 spores/m3 identified in the outdoor comparison sample.

Penicillium/Aspergillus spore types are ubiquitous in nature and are generally found growing on damp porous materials such as wallpaper and other fabrics.

• Pithomyces concentration of ranging from 7 to 20 spores/m3 were identified in four indoor samples. One sample concentration was greater than the concentration of 13 spores/m3 identified in the outdoor comparison sample. Pithomyces are commonly found in decaying plant material and grass, this species is very rarely found indoors.

• Rust concentrations of 13 spores/m3 were identified in the outdoor comparison sample and were not identified in the indoor samples. Rust are plant pathogens which require a living host.

• Smuts, Periconia and Myxomycetes concentrations of 87 spores/m3 were identified in the outdoor comparison sample and were not identified in the indoor samples. These fungal types are plant pathogens which require a living host. They can be found indoors, but rarely growing.

A copy of the laboratory analytical report is included in Appendix E and a fungal air sampling map is contained in Appendix F.

TTL Project No. 1801901 Page 7

4.0 CONCLUSIONS/RECOMMENDATIONS

This section summarizes the results of the limited asbestos survey and fungal investigation and sampling and provides conclusions and recommendations.

4.1 Asbestos Survey

The U.S. EPA defines regulated asbestos-containing material (RACM) as: (a) Friable asbestos material, (b) Category I Non-Friable ACM that has become friable, (c) Category I Non-Friable ACM that will be or has been subjected to sanding, grinding, cutting, or abrading, or (d) Category II Non-Friable ACM that has a high probability of becoming or has become crumbled, pulverized, or reduced to powder by the forces expected to act on the material in the course of demolition or renovation operations.

Based on the results of laboratory analysis or assumption of ACM (as appropriate), the following friable ACM were identified, and require removal prior to demolition or renovation activities that would disturb the material:

• Approximately 10 l.f. of aircell pipe insulation (HSA 16)

• Approximately 28 l.f. of 0-6” mag pipe insulation (HSA 23)

The following non-friable Category I ACM were identified, and require removal prior to demolition or renovation activities that would disturb the material:

• Approximately 1,515 s.f. of floor tile under carpet (HSA 07)

• Approximately 1,065 s.f. of 12" x 12" blue marble pattern floor tile (3 Layers) (HSA 11)

• Approximately 1,445 s.f. of floor tile under carper (HSA 18)

The following non-friable Category II ACM were identified, or assumed, and require removal prior to demolition or renovation activities that would disturb the material:

• 11 each of fire door and frame (HSA 06), Assumed ACM

• 1 grey sink undercoat (HSA 13)

• Approximately 20 s.f. of duct vibration dampener (HSA 24), Assumed ACM

The National Emissions Standard for Hazardous Air Pollutants (NESHAP) asbestos regulations require the removal of all RACM from a facility being demolished or renovated prior to beginning any activity that might damage or disturb the material. The U.S. EPA requires written notification if the combined amount of RACM to be removed is at least 260 linear feet, at least 160 square feet, or at least one cubic meter of facility components where length or area could not be measured. The MDNR requires a ten-day notification if the amount of RACM to be removed exceeds 260 linear feet, at least 160 square feet, or at least one cubic meter. This notification is to be submitted at least ten working days prior to beginning any asbestos abatement.

TTL recommends the removal of the RACM and the ACM that might become RACM based on

TTL Project No. 1801901 Page 8 the project-specific renovation techniques by a licensed asbestos abatement contractor. Based on the condition of the material, the identified ACM may be expected to be a RACM. Therefore, the renovation contractor must be notified of the presence, quantity and location of the material so as to avoid project specific renovation techniques that may render the material friable and RACM.

4.2 Limited Fungal Inspection

The total spore count in the sample collected in the NE stairwell (05) exceeded the total spore count of the outdoor sample (01). The three indoor samples with higher spore count of Penicillium/Aspergillus spores as compared to the outdoor sample were identified in two stairwells (SE and NE) and Room 120 adjacent to the stairwell (on the 1st floor). Based upon the results of the Limited Fungal Investigation, TTL recommends the following courses of action:

• Investigate high moisture levels in the stairwells and also perform destructive sampling

• Repair the broken pipe in Room 120 and clean up carpet using sanitizing agents

• Remove and replace any and all associated porous materials impacted by fungal growth or water damage;

• High efficiency particulate air (HEPA) vacuum and wet wipe with a sanitizing agent any non or semi-porous materials impacted by fungal growth or water damage;

• Conduct a visual inspection to verify the removal of all fungal growth sources;

• Use air scrubbers within the work area for 24 hours after the completion of remedial activities; and,

• Collect and analyze final air clearance samples to ensure that the indoor air quality within the work area is suitable for reoccupancy.

The foregoing activities should be conducted by persons trained in mold remediation utilizing the Industry Standard of Care. Such workers should wear proper personal protective equipment (PPE) as defined by the General Duty Clause in the Occupational Safety and Health Administration’s (OSHA) 29 Code of Federal Register (CFR) 1910. Proper setup, engineering controls, controlled demolition through dust suppression techniques, proper bagging and disposal and final cleaning should be incorporated in a work scope to guide the remediation and cleaning processes. The remediation process should include the tasks recommended for a large project (>100 ft2) by the guidance documents that form the Industry Standard of Care in Appendix G.

4.3 Limitations

TTL has made reasonable efforts to identify and quantify suspect ACM based upon the standard of care in the environmental industry existing at the time of the survey. This survey only summarizes the potential presence and estimated quantities of visually observed ACM within the designated areas.

Additional material disturbed during renovation or demolition activities should be evaluated on a case-by-case basis, especially materials that were previously hidden, obscured or inaccessible, to determine if the material is included in this survey. If a given material is not described in this survey or cannot be identified as a non-suspect material, the material should be assumed to contain asbestos and renovation and/or demolition activities should be halted until sampling and

TTL Project No. 1801901 Page 9 analysis can be accomplished. Parties conducting renovation and/or demolition activities should follow all applicable federal, state, and local regulations in handling identified and suspect ACM.

The information contained in the report was based upon specific parameters and regulations in force at the time of the survey. The information herein is only for the specific use of Guidon and TTL, unless written authorization is obtained from TTL. TTL accepts no responsibility for the use, interpretation, or reliance by other parties on the information contained herein, nor does this report represent an instrument of regulatory compliance or an asbestos abatement specification.

APPENDIX A

TTL CERTIFICATIONS

APPENDIX B

TTL HSA TABLE

Homogeneous Sampling Areas Table St. Louis Veterans Affairs Medical Center

Project 657-19-127JB - Building 2 1 Jefferson Barracks Dr. St

St. Louis, MO 63125

HSA # Material Description Friability Functional Area Quantity Units Sample Number Sample Results 01 Drywall and joint compound NF-II Throughout 7,455 s.f. 01A-01G Negative

Total 7,455 s.f.

02 4" black cove base with adhesive NF-II First floor lobby 75 l.f. 02A Negative 02 4" black cove base with adhesive NF-II First floor corridor 100 l.f. Negative 02 4" black cove base with adhesive NF-II Corridor H202 50 l.f. 02B Negative 02 4" black cove base with adhesive NF-II Corridor H201 30 l.f. Negative 02 4" black cove base with adhesive NF-II 209 20 l.f. Negative

Total 175 l.f.

03 6" black covebase and mastic NF-II First floor lobby 15 l.f. 03A Negative 03 6" black covebase and mastic NF-II Corridor H101 75 l.f. 03B Negative

Total 90 l.f.

04 2 'x 2' Pinhole and fissure ceiling tile F Throughout 1,850 s.f. 04A, 04B Negative

Total 1,850 s.f.

05 Wood laminate floor adhesive over concrete NF-I First floor lobby 300 s.f. 05A, 05B Negative

Total 300 s.f.

06 Fire door and frame NF-II 1st Floor Vestibule Lobby 1 each Assumed 06 Fire door and frame NF-II Stairs S101 1 each Assumed 06 Fire door and frame NF-II 1st Floor Corridor 2 each Assumed 06 Fire door and frame NF-II Room 212 1 each Assumed 06 Fire door and frame NF-II Corridor H201 1 each Assumed 06 Fire door and frame NF-II Room 212C 1 each Assumed 06 Fire door and frame NF-II Room 212D 1 each Assumed 06 Fire door and frame NF-II Room 212E 1 each Assumed 06 Fire door and frame NF-II Stairwell NE 1 each Assumed 06 Fire door and frame NF-II Stairwell SE 1 each Assumed

Total 11 each

07 Floor tile under carpet (2 layers) NF-I Stairs S101 50 s.f. 07A Positive 07 Floor tile under carpet (2 layers) NF-I Room 105 115 s.f. 07B Positive 07 Floor tile under carpet (2 layers) NF-I Room 119A 175 s.f. Positive 07 Floor tile under carpet (2 layers) NF-I Room 119 325 s.f. Positive 07 Floor tile under carpet (2 layers) NF-I Room 118 (Including Closet) 225 s.f. Positive 07 Floor tile under carpet (2 layers) NF-I Room 116 (Including Closet) 225 s.f. Positive 07 Floor tile under carpet (2 layers) NF-I Room 115 150 s.f. Positive 07 Floor tile under carpet (2 layers) NF-I Room 114 250 s.f. Positive

Total 1,515 s.f.

TTL Project No. 1808901 1 of 4

Project 657-19-127JB - Building 2 1 Jefferson Barracks Dr. St

St. Louis, MO 63125

HSA # Material Description Friability Functional Area Quantity Units Sample Number Sample Results 08 Carpet glue NF-I Stairs S201 200 s.f. 08A Negative 08 Carpet glue NF-I Room 113 225 s.f. Negative 08 Carpet glue NF-I Room 111 225 s.f. Negative 08 Carpet glue NF-I Room 212 700 s.f. 08B Negative 08 Carpet glue NF-I Room North of Room 212 500 s.f. Negative 08 Carpet glue NF-I Hall Next to Room 212 500 s.f. Negative 08 Carpet glue NF-I Room 212C 100 s.f. Negative 08 Carpet glue NF-I Room 212D 100 s.f. Negative 08 Carpet glue NF-I Room 212E 100 s.f. Negative 08 Carpet glue NF-I Room 212A 115 s.f. Negative 08 Carpet glue NF-I Corridor H201 100 s.f. Negative

Total Total 2,865 s.f.

09 Interior window frame caulk NF-II Throughout 760 l.f. 09A, 09B Negative

Total 760 l.f.

10 Plaster NF-II Throughout 13,770 s.f. 10A-10G Negative

Total 13,770 s.f.

11 12" x 12" blue marble pattern floor tile (3 Layers) NF-I First floor corridor 600 s.f. 11A, 11B Positive 11 12" x 12" blue marble pattern floor tile (3 Layers) NF-I Corridor H202 365 s.f. Positive 11 12" x 12" blue marble pattern floor tile (3 Layers) NF-I Room 209 100 s.f. Positive

Total 1,065 s.f.

12 2' x 4' pinhole fissure ceiling tile F Throughout 5,975 s.f. 12A, 12B Negative

6700 s.f.

13 Grey sink undercoat NF-II Room 209 1 each 13A, 13B Positive

Total 1 each

14 4" grey covebase with adhesive NF-II Room 212 50 l.f. 14A Negative 14 4" grey covebase with adhesive NF-II Hall next to Room 212 50 l.f. 14B Negative

Total 50 l.f.

15 Adhesive associated with marble patter floor tile NF-I Corridor H202 100 s.f. 15A, 15B Negative

Total 100 s.f.

16 0-6" aircell line F Room 120 10 l.f. 16A, 16B, 16C Positive

Total 10 s.f.

TTL Project No. 1808901 2 of 4

Project 657-19-127JB - Building 2 1 Jefferson Barracks Dr. St

St. Louis, MO 63125

HSA # Material Description Friability Functional Area Quantity Units Sample Number Sample Results 17 Ceiling fiberboard NF-II Room 120 150 s.f. 17A Negative 17 Ceiling fiberboard NF-II Room 110 100 s.f. 17B Negative 17 Ceiling fiberboard NF-II Room 114 100 s.f. Negative

Total 350 s.f.

18 Floor tile under carpet NF-I Room 120 180 s.f. 18A Positive 18 Floor tile under carpet NF-I Room 110 75 s.f. Positive 18 Floor tile under carpet NF-I Room 123C 175 s.f. Positive 18 Floor tile under carpet NF-I Room 108 225 s.f. 18B Positive 18 Floor tile under carpet NF-I Room 106 180 s.f. Positive 18 Floor tile under carpet NF-I Room 109 160 s.f. Positive 18 Floor tile under carpet NF-I Room 111 225 s.f. Positive 18 Floor tile under carpet NF-I Room 104 225 s.f. Positive

Total 1,445 s.f.

19 1 'x 1' ceiling tile with holes F Throughout first floor 1,300 s.f. 19A, 19B Negative

Total 1,300 s.f.

20 Tar paper under carpet F Room 105A 180 s.f. 20A, 20B Negative

Total 180 s.f.

21 Cloth wire insulation NF-II Room 112 1 l.f. 21A, 21B Negative

Total 1 l.f.

22 Red fire stop NF-II Room 112 1 s.f. 22A, 22B Negative

Total 1 s.f.

23 0-6" mag line F Room 212A 3 l.f. Positive 23 0-6" mag line F Room 118 closet 25 l.f. 23A, 23B, 23C Positive

Total 28 l.f.

24 Air duct vibration dampener NF-II Room 112 10 s.f. Assumed 24 Air duct vibration dampener NF-II Room 212A 4 s.f. Assumed 24 Air duct vibration dampener NF-II Corridor H201 2 s.f. Assumed 24 Air duct vibration dampener NF-II Room 210 4 s.f. Assumed

Total Total 20 s.f.

25 Grey duct sealant NF-II Room 212 10 s.f. 25B Negative 25 Grey duct sealant NF-II Hallway Next to Room 212 10 s.f. 25A Negative 25 Grey duct sealant NF-II Room 212A 8 s.f. Negative 25 Grey duct sealant NF-II Room 212C 4 s.f. Negative

TTL Project No. 1808901 3 of 4

Project 657-19-127JB - Building 2 1 Jefferson Barracks Dr. St

St. Louis, MO 63125

HSA # Material Description Friability Functional Area Quantity Units Sample Number Sample Results 25 Grey duct sealant NF-II Room 212D 4 s.f. Negative 25 Grey duct sealant NF-II Room 212E 4 s.f. Negative 25 Grey duct sealant NF-II Room 210 5 s.f. Negative 25 Grey duct sealant NF-II Corridor H201 5 s.f. Negative

Total 50 s.f.

26 Glue pods on ceiling NF-II Room 212 500 s.f. 26B Negative 26 Glue pods on ceiling NF-II Hallway Next to Room 212 500 s.f. 26A Negative 26 Glue pods on ceiling NF-II Room 212C 100 s.f. Negative 26 Glue pods on ceiling NF-II Room 212D 100 s.f. Negative 26 Glue pods on ceiling NF-II Room 212E 100 s.f. Negative

Total 1,300 s.f.

27 12" x 12" tan speckled floor tile and mastic NF-I Room 208 100 s.f. 27A, 27B Negative 27 12" x 12" tan speckled floor tile and mastic NF-I Room 207 250 s.f. Negative

Total 350 s.f.

28 12" x 12" brown speckled floor tile and mastic NF-I Room 212F 100 s.f. 28A Negative 28 12" x 12" brown speckled floor tile and mastic NF-I Room 212A 100 s.f. Negative 28 12" x 12" brown speckled floor tile and mastic NF-I Room 210 80 s.f. 28B Negative 28 12" x 12" brown speckled floor tile and mastic NF-I Room 208 50 s.f. Negative 28 12" x 12" brown speckled floor tile and mastic NF-I Room 207 250 s.f. Negative

Total 580 s.f.

29 4" beige covebase with adhesive NF-II NE stairwell 15 s.f. Negative 29 4" beige covebase with adhesive NF-II SE stairwell 15 s.f. Negative 29 4" beige covebase with adhesive NF-II Room 212F 30 s.f. 29A, 29B Negative 29 4" beige covebase with adhesive NF-II Room 212A 30 s.f. Negative

Total 15 s.f.

s.f. Square foot l.f Linear foot

TTL Project No. 1808901 4 of 4

APPENDIX C

TTL ASBESTOS ANALYTICAL REPORT

APPENDIX D

AIR-O-CELL® SAMPLING CASSETTE MANUFACTURER SPECIFICATIONS

APPENDIX E

FUNGAL INVESTIGATION ANALYTICAL REPORT

Approved by:

Technical Manager Ariunaa Jalsrai

Report for:

Harjot Singh TTL Associates, Inc.

1915 N. 12th St.

Toledo, OH 43604

Regarding: Project: 1801901; Guidon, St. Louis VA Jefferson Barmens

EML ID: 2226032

All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. Due to the nature of the analyses performed, field blank correction of results is not applied. The results relate only to the samples as received. Sample air volume is supplied by the client.

EMLab P&K ("the Company") shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor.

Dates of Analysis:

Spore trap analysis: 08-12-2019

Service SOPs: Spore trap analysis (EM-MY-S-1038) AIHA-LAP, LLC accredited service, Lab ID #103005

EMLab P&K's LabServe® reporting system includes automated fail-safes to ensure that all AIHA-LAP, LLC quality requirements are met and notifications are added to reports when any quality steps remain pending.

EMLab ID: 2226032, Page 1 of 6EMLab P&K, LLC

EMLab P&K 3000 Lincoln Drive East, Suite A, Marlton, NJ 08053

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 01:

Outside Vestibule 123 02:

Basement Near Center Comments (see below) None None

Lab ID-Version‡: 10581092-1 10581093-1

Analysis Date: 08/12/2019 08/12/2019 raw ct. % read spores/m3 raw ct. % read spores/m3 Alternaria 2 100 13 Ascospores 30 25 800 4 25 110 Basidiospores 110 25 2,900 5 25 130 Bipolaris/Drechslera group 1 100 7 Cercospora 1 100 7 Chaetomium Cladosporium 32 25 850 3 25 80 Curvularia 2 100 13 Nigrospora Other colorless Penicillium/Aspergillus types† 32 25 850 10 25 270 Pithomyces 2 100 13 1 100 7 Rusts 2 100 13 Smuts, Periconia, Myxomycetes 13 100 87 Stachybotrys Stemphylium Torula Ulocladium Zygomycetes Background debris (1-4+)†† 2+ 2+ Hyphal fragments/m3 20 20 Pollen/m3 13 < 7 Skin cells (1-4+) < 1+ 2+ Sample volume (liters) 150 150 § TOTAL SPORES/m3 5,600 590 Comments:

EMLab ID: 2226032, Page 2 of 6EMLab P&K, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

† The spores of Aspergillus and Penicillium (and others such as Acremonium, Paecilomyces) are small and round with very few distinguishing characteristics. They cannot be differentiated by non-viable sampling methods. Also, some species with very small spores are easily missed, and may be undercounted.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3. The limit of detection is the analytical sensitivity (in spores/m^3) multiplied by the sample volume (in liters) divided by 1000 liters.

For more information regarding analytical sensitivity, please contact QA by calling the laboratory.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

§ Total Spores/m3 has been rounded to two significant figures to reflect analytical precision.

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 03:

Room 112 04:

S.E. Stairwell 1st Floor Comments (see below) None None

Lab ID-Version‡: 10581094-1 10581095-1

Analysis Date: 08/12/2019 08/12/2019 raw ct. % read spores/m3 raw ct. % read spores/m3 Alternaria 2 100 13 Ascospores 5 25 130 2 25 53 Basidiospores 7 25 190 4 25 110 Bipolaris/Drechslera group Cercospora Chaetomium Cladosporium 11 25 290 Curvularia 1 100 7 1 100 7 Nigrospora Other colorless Penicillium/Aspergillus types† 47 25 1,300 Pithomyces 1 100 7 1 100 7 Rusts Smuts, Periconia, Myxomycetes Stachybotrys Stemphylium Torula Ulocladium Zygomycetes Background debris (1-4+)†† 2+ 3+ Hyphal fragments/m3 < 7 13 Pollen/m3 < 7 < 7 Skin cells (1-4+) 2+ 2+ Sample volume (liters) 150 150 § TOTAL SPORES/m3 640 1,400 Comments:

EMLab ID: 2226032, Page 3 of 6EMLab P&K, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

† The spores of Aspergillus and Penicillium (and others such as Acremonium, Paecilomyces) are small and round with very few distinguishing characteristics. They cannot be differentiated by non-viable sampling methods. Also, some species with very small spores are easily missed, and may be undercounted.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3. The limit of detection is the analytical sensitivity (in spores/m^3) multiplied by the sample volume (in liters) divided by 1000 liters.

For more information regarding analytical sensitivity, please contact QA by calling the laboratory.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 05:

N.E. Stairwell 1st Floor 06:

Rm. 120 Comments (see below) None None

Lab ID-Version‡: 10581096-1 10581097-1

Analysis Date: 08/12/2019 08/12/2019 raw ct. % read spores/m3 raw ct. % read spores/m3 Alternaria 1 100 7 Ascospores 1 25 27 Basidiospores 7 25 190 Bipolaris/Drechslera group Cercospora Chaetomium Cladosporium 2 25 53 Curvularia Nigrospora Other colorless Penicillium/Aspergillus types† 516 8 43,000 105 25 2,800 Pithomyces 3 100 20 Rusts Smuts, Periconia, Myxomycetes Stachybotrys Stemphylium Torula Ulocladium Zygomycetes Background debris (1-4+)†† 1+ 1+ Hyphal fragments/m3 < 7 < 7 Pollen/m3 < 7 < 7 Skin cells (1-4+) 2+ 1+ Sample volume (liters) 150 150 § TOTAL SPORES/m3 43,000 3,000 Comments:

EMLab ID: 2226032, Page 4 of 6EMLab P&K, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

† The spores of Aspergillus and Penicillium (and others such as Acremonium, Paecilomyces) are small and round with very few distinguishing characteristics. They cannot be differentiated by non-viable sampling methods. Also, some species with very small spores are easily missed, and may be undercounted.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3. The limit of detection is the analytical sensitivity (in spores/m^3) multiplied by the sample volume (in liters) divided by 1000 liters.

For more information regarding analytical sensitivity, please contact QA by calling the laboratory.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 07:

Corridor H202 08:

Corridor Outside 212D Comments (see below) None None

Lab ID-Version‡: 10581098-1 10581099-1

Analysis Date: 08/12/2019 08/12/2019 raw ct. % read spores/m3 raw ct. % read spores/m3 Alternaria Ascospores Basidiospores 1 25 27 Bipolaris/Drechslera group Cercospora Chaetomium Cladosporium 4 25 110 Curvularia Nigrospora Other colorless Penicillium/Aspergillus types† 3 25 80 2 25 53 Pithomyces Rusts Smuts, Periconia, Myxomycetes Stachybotrys Stemphylium Torula Ulocladium Zygomycetes Background debris (1-4+)†† 1+ 1+ Hyphal fragments/m3 < 7 < 7 Pollen/m3 < 7 < 7 Skin cells (1-4+) 2+ 1+ Sample volume (liters) 150 150 § TOTAL SPORES/m3 190 80 Comments:

EMLab ID: 2226032, Page 5 of 6EMLab P&K, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

† The spores of Aspergillus and Penicillium (and others such as Acremonium, Paecilomyces) are small and round with very few distinguishing characteristics. They cannot be differentiated by non-viable sampling methods. Also, some species with very small spores are easily missed, and may be undercounted.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3. The limit of detection is the analytical sensitivity (in spores/m^3) multiplied by the sample volume (in liters) divided by 1000 liters.

For more information regarding analytical sensitivity, please contact QA by calling the laboratory.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 09:

Corridor H201 10:

3rd Floor Outside Rm 309 Comments (see below) None None

Lab ID-Version‡: 10581100-1 10581101-1

Analysis Date: 08/12/2019 08/12/2019 raw ct. % read spores/m3 raw ct. % read spores/m3 Alternaria Ascospores 1 25 27 1 25 27 Basidiospores 3 25 80 1 25 27 Bipolaris/Drechslera group Cercospora Chaetomium Cladosporium 1 25 27 7 25 190 Curvularia Nigrospora Other colorless Penicillium/Aspergillus types† 4 25 110 Pithomyces Rusts Smuts, Periconia, Myxomycetes Stachybotrys Stemphylium Torula Ulocladium Zygomycetes Background debris (1-4+)†† 2+ 1+ Hyphal fragments/m3 < 7 7 Pollen/m3 < 7 7 Skin cells (1-4+) 2+ 1+ Sample volume (liters) 150 150 § TOTAL SPORES/m3 240 240 Comments:

EMLab ID: 2226032, Page 6 of 6EMLab P&K, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

† The spores of Aspergillus and Penicillium (and others such as Acremonium, Paecilomyces) are small and round with very few distinguishing characteristics. They cannot be differentiated by non-viable sampling methods. Also, some species with very small spores are easily missed, and may be undercounted.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3. The limit of detection is the analytical sensitivity (in spores/m^3) multiplied by the sample volume (in liters) divided by 1000 liters.

For more information regarding analytical sensitivity, please contact QA by calling the laboratory.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

MoldRANGE™, Local Climate; Extended Outdoor Comparison Outdoor Location: 01, Outside Vestibule 123

Fungi Identified Outdoor Typical Outdoor Data for: Typical Outdoor Data for:

data August in Missouri†

EMLab Local Climate code¹ A Annual Temp, B Elev., B Rain, B Temp. Range

(n‡=38)

The entire year in Missouri† EMLab Local Climate code¹

A Annual Temp, B Elev., B Rain, B Temp. Range (n‡=332)

Project zip code 63125 spores/m3 very low low med high very high freq % very low low med high very high freq %

Generally able to grow indoors* Alternaria 13 13 40 80 270 650 95 13 13 53 150 260 68 Bipolaris/Drechslera group 7 - - - - - 29 7 11 13 27 30 13 Chaetomium - - - - - - 5 - - - - - 4 Cladosporium 850 550 1,100 2,400 5,000 7,100 95 67 190 750 2,600 4,500 92 Curvularia 13 13 13 13 110 330 55 13 13 13 40 66 22 Nigrospora - 7 13 27 40 44 63 7 13 13 40 71 31 Penicillium/Aspergillus types 850 - - - - - 39 53 54 190 500 770 47 Pithomyces 13 13 19 27 74 200 71 13 13 27 40 93 30 Stachybotrys - - - - - - < 3 - - - - - < 1 Torula - - - - - - 16 7 13 13 43 57 11 Seldom found growing indoors** Ascospores 800 220 400 800 2,700 3,300 95 53 110 640 2,400 4,300 83 Basidiospores 2,900 300 1,400 3,000 7,300 15,000 > 99 80 160 1,400 6,200 13,000 92 Cercospora 7 14 27 67 210 270 76 13 13 53 160 250 31 Rusts 13 13 13 53 140 320 61 13 13 27 95 220 31 Smuts, Periconia, Myxomycetes 87 13 13 40 90 260 79 13 13 40 130 260 76 § TOTAL SPORES/m3 5,600

¹EMLab Local Climate codes are a climate classification scheme for statewide geographic areas. The MoldRANGE™ Local Climate report uses the sampling location zip code to identify the EMLab Local Climate code in that area. Using information available from the NOAA weather database, the EMLab Local Climate code sharpens the precision of the MoldRANGE™reporting system, providing more reliable estimates of the range and average concentrations of the different airborne fungal spore types for each region. Additional information on the EMLab Local Climate code system can be found on the last page of this report.

†The Typical Outdoor Data represents the typical outdoor spore levels across the state for the time period and EMLab Local Climate code indicated. The last column represents the frequency of occurrence. The very low, low, med, high, and very high values represent the 10, 20, 50, 80, and 90 percentile values of the spore type when it is detected. For example, if the frequency of occurrence is 63% and the low value is 53, it would mean that the given spore type is detected 63% of the time and, when detected, 20% of the time it is present in levels above the detection limit and below 53 spores/m3. These values are updated periodically and if not enough data is available to make a statistically meaningful assessment, it is indicated with a dash.

‡ n is the sample size used to calculate the MoldRANGE™ Local Climate data summarized in the table.

* The spores in this category are generally capable of growing on wet building materials in addition to growing outdoors. Building related growth is dependent upon the fungal type, moisture level, type of material, and other factors. Cladosporium is one of the predominant spore types worldwide and is frequently present in high numbers. Penicillium/Aspergillus species colonize both outdoor and indoor wet surfaces rapidly and are very easily dispersed. Other genera are usually present in lesser numbers.

** These fungi are generally not found growing on wet building materials. For example, the rusts and smuts are obligate plant pathogens.

However, in each group there are notable exceptions. For example, agents of wood decay are members of the basidiomycetes and high counts of a single morphological type of basidiospore on an inside sample should be considered significant.

EMLab ID: 2226032, Page 1 of 2EMLab P&K, LLC

(866) 871-1984 Fax (856) 334-1040 www.emlab.com Client: TTL Associates, Inc.

C/O: Harjot Singh Re: 1801901; Guidon, St. Louis VA Jefferson Barmens

Date of Sampling: 08-01-2019 Date of Receipt: 08-08-2019 Date of Report: 08-12-2019

Understanding EMLab Local Climate Codes Outdoor airborne spore concentrations are strongly influenced by climate and weather patterns, often resulting in pronounced seasonal and diurnal cycles (Burge 1995). The seasonal climatic changes directly affect the growth cycle of plants, thereby influencing fungal growth, spore maturation, and release cycles. By evaluating outdoor spore concentrations across similar climatic zones rather than for the state as a whole, it is possible to provide a more representative estimate of typical outdoor spore levels and frequency of occurrence for different airborne fungal spore types in a given area.

The EMLab Local Climate code system is a novel and patent pending classification system that uses data from the NOAA - National Oceanic and Atmospheric Administration database to define unique climate regions by state. The following local climate variables, for each statewide zip code, are obtained from NOAA and assigned a letter code of A (above the statewide average for that variable) or B (below the statewide average for that variable):

1. Annual High Temperature

2. Elevation

3. Rainfall/Precipitation

4. Monthly Temperature Range

The result is a 4-character code assigned to each statewide zip code, referred to as the Local Climate Code. Below are some examples of decoded Local Climate Codes:

AAAA = Above avg. Annual High Temperature, Above avg. Elevation, Above avg. Rainfall/Precipitation, Above avg. Monthly Temperature Range

AABB = Above avg. Annual High Temperature, Above avg. Elevation, Below avg. Rainfall/Precipitation, Below avg. Monthly Temperature Range

BBAA = Below avg. Annual High Temperature, Below avg. Elevation, Above avg. Rainfall/Precipitation, Above avg. Monthly Temperature Range

The actual outdoor air sample data from matching local climate codes in each state are then compiled in a manner relating typical spore concentrations and frequency of occurrence.

The NOAA local climate variables were selected by mapping data points from a subset of approximately 145,000 weather and geographic database entries to over 80,000 outdoor…